I got a Nokia Lumia 900 and a new AT&T 2-year contract in May of this year (after being on Sprint, AT&T is awesome!) I want to upgrade to the Lumia 920 and realize it will be $599. Any suggestions as what to do with my Lumia 900? I don't know anyone who has AT&T who would want it. Is it worth anything on EBay? Donate it somewhere? Paperweight?